Snap fastener socket



Se.; 2g; H943. .1. E F. @05m nn DAUD 29330573 SNAP FASTENER socxET Filed Oct. 8, 1941 2 Sheets-Sheet 1 Il 4 l Sept? 28, 1943- J. a F. GoBIN Dn' DAUDE 2,330,573

SNAP*A FASTENER SOCKET.. med but. a. 1941.y

2 Sheets-Sheet 2 Patented Sept. 28, 1943 JeanQEmile Eranpiscobinmtnaua, ,Neui11y, Seine, France;44 vested in the Alien, Property v Custodian 7 Application october s; 19411, SeriarNO. 11i-,19a y f .In-tFranceMarch'l,1941 l l aclaims. '(Cl. .a4-218) My inventionffrelatescto;snaptfastener sockets with independent spring means; Afor instance made of metalwire, ofithe kind which are attached =to4 the cloth or likef supportinglarticlexby means of prongs provided on an annular cap disposed on-thetoppositeiace of the.` cloth', the. said prongs being passedttlfiroughY the cloth and e'ngaging an annular locking chamberfof the socket wherein they are bent by pressure.

Themain object, offmy invention isto provide a snap :fastener socketassemblycof the kind vabove referredA to which is more eiicient in` practice than the known devices.

Inthe annexedgdrawings: y

Fig.vr 1 is. an axialgsectionwof asnapastener, socket assembly according to my. invention.

Fig. 2 is aV similarY viewl illustrating the corresponding stud engaged into the socket.v

Fig. 3 illustratespinA axialsection afmodied form of socket according to. my invention.I

Figs. 4f to 7 are perspective,-Viewsz-withxparts in*A section showingy further. modifications-ofmy yinvention.-

In order .Y to` facilitatethe following.` description the face ofithe socket comprising they-aperturey nular riveting front face I with a depressed yin- Y ner part for-ming an open cupi, the bottom edgeof which is adapted' to act--vasan'upper'or 'front abutment 3 'for the resilient wire ll forming `vthe spring-means. The latterv is formed Yas a split ring, theouter diameter 40i? which'is, in use, alwaysv greater than the inner diameter of abutment 3.'

The split ring 4'is also retainedby a lower or rear abutment 5 formed by the inner edge of' a base member B sov shaped as to. correspond' to member A. The periphery of member B'isturned inwardly around the outer edge of member A, to form a retaining ringas shown, the outer edge of member B being in lclose proximity, to but,` sepa,- rated from the flaring riveting face I'.

The socketr thus formed by members A andB is Xed to -the cloth or like support 6 by means of an annular setting cap 1 provided with spaced prongs 8 extending rearwardly. When cap 1 is pressed against the socket member, prongs 8 are passed through the cloth and engaged against the curved riveting face I, they are bent and deflected outwardly and penetrate into the annular locking chamber leftabetween memberv A-andl the'. inturnediouter edge of member B: .n Asshovm infFig 2; the stud member C .is insertedintothe socket A-B against theffaction of the resilient split ring 4 which is axially. retainedbetween abutments 3 and` 5 but is free to move radially. Splitring 4` embraces the neck of the stud after the head :has been inserted. The head of the stud isretained against' transverse displacements by the; edge of the aperture of'.

cup 2.

The lower circularportion of member B preferably projects below the rear face of abutment 5 and contacts the base of .the 'stud Amember C;

In the ^modiiication 1 illustrated in, Fig; 3, the spring means are also in theormnof aresilient splitfring. `4,1but thisilring is housed within a cir.- cular groovev '9; formed :infl the substantially ycylinzdrical inner portionj 2of.member A, the said pore -tion being S shaped in axial section, .as shown.

The walls ofgroove 9 form the axial abutments 3 yand 51for ring.4, whilethe ungrooved part of portion, 2 1formsa. guide preventing transverse. displacements ofthe. stud head. Memberv B :of

- Figs. 1 and 2 is dispensed with and the outeredge ofv member-Aisturnedinwardly on the front to formthe annular locking chamber adapted toreceiveprongs 8 when` the socket assembly isset on cloth, 6i

In Fig.` 4 the spring means 4 are in the; form of a resilient-,forkthe arms 4 and 4'. of which are elastically opened by the stud.V Member B has a at bottom 5 on which spring 4 is adapted to rest, said` bottom having; acentral aperturefor the stud head- Thev outery edgel 0f member B is turned upwardly and inwardly above or in front of-the outer edge of member A as in the case off Figs. 1 and l2 to form.. an .annular locking cham-.1` ber. to receive prong-S48. .The inner part 2 ofl member A-isturnedrearwardly and is cylindrical; its edgev 3 acts asI the-upper 'or frontabut v ment` forrarms 4Z and-4'?, Whilethe cylindrical part forms a guide preventing transverse displacements ofthe stud.

The end .ot each arm `4. or 4" is bent ati r180" t0 form a rectilinear branch such as :lili substan-A tially parallel toand .spaced from arms 4f and 4'. respectively, the said; branch terminating` in to a. curvedA portion .contacting theouter cylindrical wall-ofmember B.. Two diametrically opposed portions are cut in bottom 5 and turned upwardly and inwardly so as to form two lugs Il and Il slightly sloping inwardly as shown.

When alone and at rest, the spring 4 is larger in diameter than bottom 5 of member B and is therefore inserted in the compressed state. But at the same time the two branches such as l slide against lugs Il and H, which opens the resilient fork 4-4 against the compression of the spring up to a value suitable with respect to the size of the stud.

In the modification of Fig. 5, arms 4 and 4" are bent towards each other so as to touch one another. They are thereafter turned apart along the outer edge of bottom 5 where they are clamped between the latter and the outer edge of member A.

In Figs. 6 and 7, spring 4 comprises an arcuate circular portion clamped along the outer edge of bottom 5, the free ends being turned twice at 180 in opposite directions, as shown, and terminating into two parallel arms 4 and 4" adapted to coact with the stud member. Arms Il and-4" are axially retained by bottom 5 and edge 3 as in the constructions of Figs. 4 and 5. Two T-shaped tongues I3' and I3 are cut in bottom 5 andare turned upwardly between the ends of arms 4 and 4". `Tongues I3 and I3 form abutments limiting the movement of arms 4' and 4" towards the centre of the socket.

In the socket shown in Fig. 6, tongues I3 and i3 are out in the vicinity of the periphery of bottom 5 and are turned inwardly, i. e., about their innermost side, whereas in Fig. 7, which shows a substantially similar construction, tongues I3 and I3 are cut in the central portion of bottom 5 and are turned outwardly, i. e., about their outermost side. It will be observed that in the case of Fig. 7, tongues I3 and I3 are in part formed of metal cut within the central aperture of the socket.

The socket member according to my invention is reduced in thickness and cheap to manufacture.` 'Ihe spring member is Well protected and no't liable to be damaged.

It will be understood that the above description with said riveting face, said bottom forming an abutment for said spring means againstaxial displacement in the reverse direction with respect v 3. In a snap fastener socket as claimed in claim l, said stud-engaging spring means vbeing in the form of a resilient fork with the ends of the fork arms bent so as to form branches running parallel to and spaced from said arms but in the opposite direction and said bottom being provided with abutments for said branches.

4. A snap fastener socket comprising a rst member having a curved annular riveting front face and a substantially cylindrical central portion extending rearwardly, a second member forming a substantially flat circular bottom with a central aperture in co-axial relation with said substantially cylindrical portion, said second member having its outer edge turned around the outer edge of said inst-named member close to but in spaced relation with said riveting face so as to form an annular locking chamber, studengaging spring means formed of a resilient Wire disposed between said members, said wire being so bent as to form an arcuate portion clamped between said members along the circular edge of said bottom, the ends of said portion forming two S-shaped flat springs having their terminal branches substantially parallel and in spaced and symmetrical relation with respect to the axis of said bottom and abutments on said bottom limiting elastic displacement of said terminal branches towards each other.

5. In a snap fastener socket as claimed in claim 4, said abutments being formed of portions cut in said bottom and turned frontwardly about their inner edge.

6. In a snap fastener socket as claimed in claim 4, said abutments being formed of portions cut in said bottom and turned frontwardly about their outer edge.

7. In a snap fastener socket as claimed in claim 4, said abutments being formed of portions cut out of the bottom for forming said central aperture in the latter and turned frontwardly about their outer edge. l

8. A snap fastener socket comprising a rst member having a curved annular riveting face and a substantially tubular central portion in coaxial relation with said riveting face, a second member forming a substantially flat circular bottom with an apertured central portion in co-axial relation with said riveting face, said second member having its outer edge turned around the outer edge of said rst member close to but in spaced relation with respect to said riveting face so as 'to form an annular lockingchamber, and said second member having two opposite cut portions turned frontwardly` so as to form two lugs projecting from said flat circular bottom, and substantially flat stud-engaging spring means in the form of a resilient fork with the ends of the fork arms turned twice at and in opposite directions so as to form two branches extending parallel to but in spaced relation from said fork arms, said branches pressing elastically against said lugs in an inward direction, and two other arcuate branches pressing against the circular edge of said bottom, said resilient fork being retained in axial direction by said bottom and by the edge of said substantially tubular central portion,

9. In a snap fastener socket as claimed in claim B, said lugs sloping inwardly so as to open said resilient fork by sliding engagement With said two first-named branches when said stud-engaging spring means areV placed on said circular bottom.`

JEAN EMILE FRANors GOBIN un DAUD. 

